Patent US4873135A successfully refreshed from Google Patents.
US4873135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preframed transparency film having improved feeding reliability
Assignee: 3M Co
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Filing: 1988-01-29
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Granted: 1989-10-10
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Expires: 2008-01-29
Abstract
Abstract Sheet material suitable for preparing visual transparencies comprising: (a) a backing that is transparent to visible light, (b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, and (c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing. The sheet material has an opague border extending around the periphery thereof. The sheet material also has an area of increased caliper along one edge thereof; this area extends inward from the edge for a distance not exceeding the width of the opague border along the edge. The border provides the sheet material with a frame, while the area of increased caliper provides improved feeding reliability for xerographic imaging apparatus.
Inventors
- 👤 Bruce W. Wittnebel
- 👤 Kerry D. Reimer
- 👤 Leonard F. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/12; B32B7/14; G; G03; G03G; G03G15/00; G03G15/75; G03G15/758; G03G7/00; G03G7/0006; G03G7/0086; B32B2307/00; B32B2307/20; B32B2307/21; B32B2307/40; B32B2307/41; B32B2307/412; B32B2307/70; B32B2307/746; B32B2307/75; B32B2405/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/16; Y10T428/161; Y10T428/162; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24479; Y10T428/24488; Y10T428/24777; Y10T428/24802; Y10T428/24843; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31652; Y10T428/31667; Y10T428/31721; Y10T428/31725; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
A sheet material suitable for preparing visual transparencies comprising (a) a backing that is transparent to visible light, (b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, (c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing, said sheet material having an opaque border extending around the periphery thereof, said sheet material further having an area of increased caliper along one edge thereof, said area extending inward from said edge for a distance not exceeding the width of said opaque border along said edge, said increased caliper being effected by a strip of thin material adhesively applied to one of said anti-blocking layer or said image receptive layer, said increased caliper being of sufficient thickness so as to provide an air gap between the leading edge of an adjacent like sheet material when said sheet materials are disposed in a stack.
Claim 2
Dependent Claim
159 words
A sheet material suitable for preparing visual transparencies comprising (a) a backing that is transparent to visible light, (b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, (c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing, said sheet material having an opaque border extending around the periphery thereof, said sheet material further having an area of increased caliper along one edge thereof, said area extending inward from said edge for a distance not exceeding the width of said opaque border along said edge, said increased caliper being effected by a strip of thin material adhesively applied to one of said anti-blocking layer or said image receptive layer, said increased caliper being of sufficient thickness so as to provide an air gap between the leading edge of an adjacent like sheet material when said sheet materials are disposed in a stack.
Claim 3
Dependent Claim
19 words
The sheet material of claim 1 wherein said polymeric binder of said image receptive layer further comprises particulate material.
Claim 4
Dependent Claim
20 words
The sheet material of claim 1 wherein said polymeric binder of said image receptive layer further comprises an antistatic material.
Claim 5
Dependent Claim
18 words
The sheet material of claim 1 wherein said polymeric binder of said anti-blocking layer further comprises particulate material.
Claim 6
Dependent Claim
19 words
The sheet material of claim 1 wherein said polymeric binder of said anti-blocking layer further comprises an antistatic material.
Claim 7
Dependent Claim
17 words
The sheet material of claim 1 wherein said opaque border comprises a pigment dispersed in a binder.
Claim 8
Dependent Claim
30 words
The sheet material of claim 1 wherein said opaque border has an opacity of 50% or greater, as measured according to TAPPI Useful Method 411, section 3.0 (corrected November, 1978).
Claim 9
Dependent Claim
18 words
The sheet material of claim 1 wherein said strip of thin material is a pressure sensitive adhesive tape.
Claim 10
Dependent Claim
144 words
A sheet material suitable for preparing visual transparencies comprising (a) a backing that is transparent to visible light, (b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, (c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing, said sheet material having an opaque border extending around the periphery thereof, said sheet material further having an area of increased caliper along one edge thereof, said area extending inward from said edge for a distance not exceeding the width of said opaque border along said edge, said increased caliper being effected by a printed coating, said increased caliper being of sufficient thickness so as to provide an air gap between the leading edge of an adjacent like sheet material when said sheet material are disposed in a stack.
Claim 11
Dependent Claim
144 words
A sheet material suitable for preparing visual transparencies comprising (a) a backing that is transparent to visible light, (b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, (c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing, said sheet material having an opaque border extending around the periphery thereof, said sheet material further having an area of increased caliper along one edge thereof, said area extending inward from said edge for a distance not exceeding the width of said opaque border along said edge, said increased caliper being effected by a printed coating, said increased caliper being of sufficient thickness so as to provide an air gap between the leading edge of an adjacent like sheet material when said sheet material are disposed in a stack.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |